Vallaint Boiler "fog horn" noise

[Billy Bob Bob]

Ok so how do i adjust level. I will try anything at this stage to get a nights sleep.

you cant you need a gsr engineer

 

[oldplumber]

Ok so how do i adjust level. I will try anything at this stage to get a nights sleep.

you spend 4 years training, take lots of exams, get gas safe registered, spent upto and over £1000 on an FGA and other associated kit , then you can look at the tech data on your boiler and adjust the gas valve setttings based on your fga readouts in order to set up your boiler correctly. Or you find a goood rgi and have them do the job a lot cheaper and hopefully correctly.

 

[moony]

I came across one very noisey Vaillant ecoMax pro 18e (system boiler), it turned out that the pcb had been set up for the pro 28e model (over gassed) but your noise could be something completely different. Did it make the noise when the Vaillant engineer tested it?. By the by, when it come to comparing engineers from different companies or manufactures you can find good & bad ones from most of them (yes even BG), some intermittant faults can test the best of us and diagnosing a fault on an internet forum is not always that easy either.
Martin

how the hell did you find that out ? the pcb fault? that would defo be a head scratcher...

 

[Ockyvines]

you spend 4 years training, take lots of exams, get gas safe registered, spent upto and over £1000 on an FGA and other associated kit , then you can look at the tech data on your boiler and adjust the gas valve setttings based on your fga readouts in order to set up your boiler correctly. Or you find a goood rgi and have them do the job a lot cheaper and hopefully correctly.

Well said!

 

[chassy]

Ok if incorrect Co2 level is the likely cause of "fog horn" type noise each time the Boiler demands heat then I will get a CORGI registered plumber to check and re-set if necessary. As I said this loud noise only lasts 20 seconds or so each time Boiler calls for gas but it's extremely irritating and annoying the neighbours. I realise a forum cannot diagnose problem but I would like to understand most likely cause.

 

[oldplumber]

Ok if incorrect Co2 level is the likely cause of "fog horn" type noise each time the Boiler demands heat then I will get a CORGI registered plumber to check and re-set if necessary. As I said this loud noise only lasts 20 seconds or so each time Boiler calls for gas but it's extremely irritating and annoying the neighbours. I realise a forum cannot diagnose problem but I would like to understand most likely cause.

Please use a gas safe registered engineer, corgi lost the franchise to isse "licences" to engineers last year and anyone still claiming to be corgi registered may be a cowboy and not hold gas tickets or therefore be insured to work on gas.

 

[LIFES A GAS]

Just because a business is “Gas Safe Registered” does not necessary mean they can sort your problem. Many GSR operatives have never lifted the bonnet of a boiler, or do they understand the working of it, they install the boiler in the same way as they would install a kitchen sink. An installer must hold the revelant ACS certificates before they can register with “Gas Safe”, the certificates are issued by hundreds of so called training centres, The ACS certificate are issued after completion of a course dealing with the safety aspect of the installation but they are not required to understand the in-depth working of the appliances they install to acquire that certificate. So when you employ someone to repair a fault with your boiler/system, remember, not just any Registered Gas Installer will do, there are those who just install and others who also specialise in the maintenance of boilers and heating systems.
Martin.

 

[chassy]

Thanks. I did expect the Vallaint Service engineer to diagnose this problem but he didn't when he serviced the boiler - he did take the cover off and seemed to know what he was looking at. He mumbled something about the flue but had nothing to offfer about the cause of the intermittent vibrating fog-horn noise on start-up. I have wriiten letters of complaint to Vallaint but they say service would not cover this fault and i have to pay full whack for another call-out. I told them where to go.

 

[HiQ]

Its a design fault exposed mainly when you have a vertical flue and there is no fix other than to reduce the minimum fan speed thereby reducing the modulation range.

 

[Dotty]

Moved off open forum.